When 0. G. S. Crawford investigated a length of bank and ditch in Kincladie Wood near Dunning, in Perthshire, he observed that ‘the possibility that it might be a fragment of a Roman camp cannot be excluded’ (1948, 59). Kincladie Wood is 2 km. from the hill at Duncrub, a locality that has been equated philologically with the early historical Dorsum Crup (Watson, 1926, 56). We are assured by philologists that Mons Craupius, too, can be added to the equation.* The case which follows for identifying the hill at Duncrub with Mons Craupius, in which the philological proposition is supported by archaeological evidence, is offered to mark the 50th anniversary of Crawford’s appointment as first Archaeology Officer in the Ordnance Survey.